代码与注释
#裁剪与写入
from moviepy.editor import VideoFileClip,AudioFileClip
#拼接视频与音频
from moviepy.editor import concatenate_videoclips,concatenate_audioclips
#预加载的视频
videoFile = 'demo.avi'
#要保存的文件名
video_name = 'cut_video.mp4'
audio_name = 'cut_audio.mp3'
#载入文件
video = VideoFileClip(